micro-ramps for hypersonic flow control

Clicks: 95
ID: 193970
2012
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Abstract
Shock/boundary layer interaction (SBLI) is an undesirable phenomenon, occurring in high-speed propulsion systems. The conventional method to manipulate and control SBLI is using a bleed system that involves the removal of a certain amount of mass of the inlet flow to control boundary layer separation. However, the system requires a larger nacelle to compensate the mass loss, larger nacelles contribute to additional weight and drag and reduce the overall performance. This study investigates a novel type of flow control device called micro-ramps, a part of the micro vortex generators (VGs) family that intends to replace the bleed technique. Micro-ramps produce pairs of counter-rotating streamwise vortices, which help to suppress SBLI and reduce the chances of flow separation. Experiments were done at Mach 5 with two micro-ramp models of different sizes. Schlieren photography, surface flow visualization and infrared thermography were used in this investigation. The results revealed the detailed flow characteristics of the micro-ramp, such as the primary and secondary vortices. This helps us to understand the overall flow physics of micro-ramps in hypersonic flow and their application for SBLI control.
Reference Key
kontis2012micromachinesmicro-ramps Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Konstantinos Kontis;Azam Che-Idris;Hossein Zare-Behtash;Mohd R. Saad
Journal chemistryopen
Year 2012
DOI
10.3390/mi3020364
URL
http://www.mdpi.com/2072-666X/3/2/364
Keywords Keywords not found

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